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Zookeeper >> mail # dev >> Connection refused exception


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Ted Yu 2012-04-04, 17:33
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Patrick Hunt 2012-04-04, 20:26
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Re: Connection refused exception
That's right.

On Wed, Apr 4, 2012 at 1:26 PM, Patrick Hunt <[EMAIL PROTECTED]> wrote:

> Your point being that this should be an info message rather than a
> warning? (which sounds reasonable to me)
>
> Patrick
>
> On Wed, Apr 4, 2012 at 10:33 AM, Ted Yu <[EMAIL PROTECTED]> wrote:
> > Hi,
> > We use zookeeper 3.3.5
> > From the output of one of our integration tests:
> >
> > [org.apache.zookeeper.ClientCnxn] [WARN] Session 0x1367bfbdcae0006 for
> > server null, unexpected error, closing socket connection and attempting
> > reconnect
> > java.net.ConnectException: Connection refused
> >  at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> >  at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> >  at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
> > [org.apache.zookeeper.ClientCnxn] [INFO] Opening socket connection to
> > server localhost/127.0.0.1:21818
> > [org.apache.zookeeper.ClientCnxn] [WARN] Session 0x1367bfbdcae0006 for
> > server null, unexpected error, closing socket connection and attempting
> > reconnect
> > java.net.ConnectException: Connection refused
> >  at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> >  at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> >  at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
> > [org.apache.hadoop.hbase.regionserver.Leases] [INFO]
> > RegionServer:0;localhost,39260,1333519967365.leaseChecker closing leases
> > [org.apache.hadoop.hbase.regionserver.Leases] [INFO]
> > RegionServer:0;localhost,39260,1333519967365.leaseChecker closed leases
> > [org.apache.zookeeper.ClientCnxn] [INFO] Opening socket connection to
> > server localhost/127.0.0.1:21818
> > [org.apache.zookeeper.ClientCnxn] [WARN] Session 0x1367bfbdcae0006 for
> > server null, unexpected error, closing socket connection and attempting
> > reconnect
> > java.net.ConnectException: Connection refused
> >  at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> >  at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> >  at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
> >
> > ------
> >
> > In jstack I saw:
> >
> > "main-EventThread" daemon prio=10 tid=0x00007fd8a428e800 nid=0x3b1f
> waiting
> > on condition [0x00007fd89e4a3000]
> >   java.lang.Thread.State: WAITING (parking)
> >  at sun.misc.Unsafe.park(Native Method)
> >  - parking to wait for  <0x00000000eb569b10> (a
> > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> >  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
> >  at
> >
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
> >  at
> >
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
> >  at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> >
> > "main-SendThread(localhost:21818)" daemon prio=10 tid=0x00007fd8a454b000
> > nid=0x3b1e waiting on condition [0x00007fd89eaa9000]
> >   java.lang.Thread.State: TIMED_WAITING (sleeping)
> >  at java.lang.Thread.sleep(Native Method)
> >  at
> >
> org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1045)
> >  at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1101)
> >
> > My question is: should ConnectException be handled in the catch block of
> > ClientCnxn (around line 1183) ?
> >
> > Cheers
>